Centrifugal separator



Nov. 21, 1933. o, BI GERMOND 1,936,130

CENTRIFUGAL SEPARATOR Filed Deo. 28, 1951 2 Sheets-Sheet l I NOV. 21, Q B. GERMOND CENTRIFUGAL SEPARATOR Patented Nov. 21, 1933 iran STATES P AT Application December 28K, 1931 Serial No. 588,484

2 claims. (c1. 209-159) v'lhisinvention relates to a separator designed for use in recovering gold and other precious metal fromocean or beach sand.

An important object of the invention is the provision of a machine of this character so constructed that the material will be agitated and forced downwardly into the vlower end of the cylinder, the heavier particles falling to the bottom of the cylinder while the lighter particles `are forced laterally through the discharge openings of the cylinder. f

Another object ofthe invention is to provide a bowl into which the material is deposited during A the separating operation, the bowl having discharge openings disposed at Various levels, thereby adapting the device for use in separating metals from liquids of various specific gravities.

With the foregoing and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of ccnstruc- Y tion hereinafter described and claimed, it being understood that changes in the precise embodiment of theinvention herein disclosed, may be.

vmade within the scope of what is claimed, rwithi view through une 4-4 comprises a body portion or bowl indicated byv the reference character 5, the same being provided with a funnel-like bottom 6 to which the pipe 7 is connected, the pipe 7 being formed with external threads to cooperate with the threads of the cup 8 which forms a cap for the pipe 7. The upper end of the body portion is closed b Vmeans of the disk-like closure 9, which is bolted to the body portion. v

Disposed in the wall of the body portion, near the funnel-like bottom 6, is an opening normally closed by means of the plug 10, which opening 'permits of the draining of the body portion 5, while the cap 8 remains in position.

Openings 33 are formed in the wall of the body portion, the openings being arranged in vertical `spaced. relation with each other, all of the opening theoperation of the machine, the openings allowing the material to flow from the body por-` tion.

Caps 34close the openings, and in the use of the device, one of the caps is removed, to allow the material to flow therefrom.

The cap selected to be removed, is determined by the specic gravity of the material under treatment, since it will be obvious that itis necessaryV to discharge the material of a low specific gravity, ata much higher level than a material of a high specific gravity, in order to properly separate the valuable or heavy particles from the valueless or light material.

Angle bars 10V extend upwardly from the body 70 portion with which they are connected, and provide supports for the bearing rings 11 and 12, which have right angled portions 13 formed with f openings to receive the bolts 14., whereby the bearing rings are secured in position. 5.

The reference character 15 designates a frame that has its lower end bolted to the angle bars 10', the frame being extended above the upper ends of the angle bars.

Forming a part of the frame 15, is a supporting ring 16 that has laterally extended arms 17 formed with upstanding end portions 18 that are-bolted to the frame 15, at 19. v

This supporting ring 16 provides a support for the feed hopper 20. The device also includes a rotary cylinder 21 that has a threaded upper extremity to receive threads of the cylinder cap 22, which cylinder cap is formed with a bearing: to receive the spout 23 of the hopper 20, to the end that the cylinder 22 may rotate within the 9d," body portion.

VThis cylinder is of a length to extend to a point an appreciable distance between the funnellike bottom 6, the lower end of the cylinder being formed with openings 24 to permit the heavier particles to pass lateraly from the cylinder and be deposited in the bowl 5.

As shown, the lower end of the cylinder is closed b y means of the bottom 25, which is formed with an upstanding central bearing 26 which is vin the form of a pin over which the bearing lid shaft 28 to operate at a point intermediate the ends of the cylinder.

These feed vanes are arranged in such a way that they will direct material downwardly, as the cylinder rotates.

Secured to the cylinder 22, are bearing races 30 that cooperate with the races 31 carnied by the bearing rings ll and 12, there being provided roller bearings 32 between the bearing races, to permit the cylinder to rotate freely, regardless of the weight it carries.

The reference character 33 designates a pulley over which a power belt may operate, in order to rotate the cylinder 22.

The device is supported by means of the supporting legs 35 which are secured to the body portion or bowl 5, as clearly shown by Figure 1 of the drawings.

From the foregoing it will be seen that as the cylinder 22 is rotated, and material is fed to the cylinder, the vanes 29 will act to direct the material towards the bottom of the cylinder, the heavier particles dropping into the cup 8, while the lighter particles pass off through Vthe body portion.

Having thus described theV invention what is claimed is.

1. A separator comprising a bowl-like body portion, supporting bars rising from the body portion, a rotary cylinder extending into the body portion and having a closed lower end, horizontal bars connected with the supporting bars,

bearing rings connected with the horizontal bars and in which the cylinder rotates, said cylinder having openings spaced from the closed end thereof to permit material to collect at the bottom of the cylinder and overflow through the openings, a stationary shaft extending into the cylinder, agitators on the shaft and disposed at angles to direct material downwardly as the cylnder rotates, and a funnel for directing material into the upper end of the cylinder.

2. A separator for recovering precious metals, comprising a body portion, vertical supporting bars nising from the body portion, a vertical rotary cylinder extending into the body portion and having a closed lower end, said cylinder having openings spaced from the closed end thereof to permit material collecting on the bottom of the cylinder to overow into the body portion, bearings carried by the cylinder, arms secured to the supporting bars, stationary bearngs on the horizontal bars and cooperating with the first mentioned bearings in supporting the cylinder for rotary movement, a stationary shaft extending into the cylinder, agitators mounted on the shaft and extending to points adjacent to the wall of the cylinder, said agitators being disposed to direct material downwardly when the cylinder is rotated around the shaft, and a `funnel-like member for directing material into the cylinder.

OATMER B. GERMOND. 

